| 摘要 |
<p>PURPOSE:To make a voltage impressed between poles after a breaking same as the voltage in an actual system by connecting a 2nd auxiliary breaker and a resistor respectively between a breaker to be tested and a 1st and 2nd voltage sources. CONSTITUTION:An auxiliary breaker CBc is closed and an auxiliary breaker CBa is left opened, then a current I1 is made to flow to the breaker CB to be tested from a power supply PO through the auxiliary breaker CBa. When the breakers CB, CBa are opened at a time point t1, the current I1 is interrupted at a time point t2 but a current I2 is made to flow by a while device before/after this interruption. When an auxiliary breaker CBb is closed at a time point 3, a voltage V1 is impressed to the breaker CB to be tested. When an auxiliary breaker CBc is opened during time points t3-t4, a current I3 is interrupted at a time point t4, and after that, a voltage V2 is impressed to the breaker CB to be tested from a low voltage terminal 2 through the resistor R. Consequently, the same waveform as one in the actual system can be obtained.</p> |
